Here is the full list of all 13 The Ditzy Demons Are in Love With Me achievements.
Start playing Koikuma
Riria route clear
Emiri route clear
Yuu route clear
Arle route clear
Miyabi route clear
Rin route clear
Aifa route clear
Reika route clear
All routes cleared
First use of panic button
Use Gome's system voice
Play all routes and view all content